Drill Bits for Electricians: FAQ's

Use a masonry bit that matches the wall plug diameter—typically 6mm to 10mm.

Most are, as long as they match the drill's chuck size (usually 3/8" or 1/2"). Specialty bits may need adapters.

Auger bits are ideal for drilling long, clean holes through multiple studs without splintering.

A lightweight, high-torque cordless drill with variable speed and compact design is best for electricians.

A cordless drill and a set of job-specific drill bits are among the most-used tools for electrical installations.

It depends on the wire gauge and application. For Romex, 3/4" to 1" is typical through studs.

Common plug sizes range from 3/4" to 1 1/8"—step bits are ideal for this because they can create multiple hole sizes in one pass.

An "electrical bit" refers to a drill bit designed specifically for electrical work, such as wire routing or panel installation.

Electricians typically use cordless power drills paired with step bits for metal, spade bits for wood, or fish bits for running wire.

Step bits, auger bits, spade bits, and extra-long flex bits are most commonly used by electricians.